Spinosaurus, the only known semiaquatic dinosaur predator, joins Tyrannosaurus, Giganotosaurus and Carcharodontosaurus among the largest meat-eating dinosaurs.

Biomechanical research across two very different lineages of predators, spotted hyenas and crocodilians, is revealing how skull architecture and jaw mechanics produce some of the most extreme ...

Could Spinosaurus swim? A new fossil with a scimitar-like head crest provides new evidence on the unsettled question.

Fossil tooth lodged in skull helps reconstruct final moments of giant dinosaur that became prey - Researchers say finding indicates duckbilled plant-eating dinosaur was killed by a T rex ...